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Finding the Fourth Proportional to 3,647.58, 5,033.64 and 1,991.58

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Solution

The fourth proportional to 3,647.58, 5,033.64 and 1,991.58 is: 2,748.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,647.58 : 5,033.64 = 1,991.58 : x
  2. Step 2: Convert to fraction form
    3,647.58/5,033.64 = 1,991.58/x
  3. Step 3: Cross multiply
    3,647.58x = 5,033.64 × 1,991.58
  4. Step 4: Simplify right side
    3,647.58x = 10,024,896.75
  5. Step 5: Solve for x
    x = 10,024,896.75/3,647.58
  6. Step 6: Final answer
    x = 2,748.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.